Clearer for roving or spinning frames



Nov. 14, 1944. J. 1.. TRUSLOW ETAL 2,362,732

CLEARER FOR ROVING OR SPINNING FRAMES Filed April 2, 1942 INVENTORS 4*c/Evesl Tr-aalaw:

BY 7z52r7yl 173077708.

Patented Nov. 14, 1944 V H fiz'sszflsz" I CLEABER FOR Rovmo OR S I INNING 1 I I FRAMES H James L. Truslow,- 'Whitinsville, and Henry L.

Thomas. EastDouglas, Mass, assignors to Whitin Machine Works,.Whitinsville;:Mass., a corporation of Massachusetts. y l

Application April 2, 19-42, Serial No. 437,384

i claims; ua-14o This'jinvention relates to roving'orspinning frames inwhich roving is drafted between draw; ing rolls or 'betweenlong-draftaprons. Insuch machines, lint or fly adheres to the rolls'or apronsandmustbe continuously collected and removed.

. Both f xed clearers and freely rotating clearers have been used forthis purpose but without complete success. Bunches of fly and lintgradually accumulate on the fixed clearers, which bunches are frequentlydislodged and em ter the rovingor yarn. On the other hand, the

freelyv rotating clearers have no scraping nor frictional action andwill not remove closely adhering lint or fly, particularly fromlong-draft aprons.

It is the general object of our invention to provide a clearer for suchpurposes which will combine the good features of both fixed and rotatingclearers and which will be more effec tive than either typeof clearer.

To the accomplishment of this general object, we provide a .clearer rollwhich is alter- Fig. 2 is an enlarged sectional end elevation,

taken along the line 2-2 of Fig. l, and

Fig. 3 is a sectional side elevation showing 7 our improvedclearer-associated with long-draft mechanism. Referring to Figs. 1' and2, we have shown a portion of a lower'or driven drawing roll 10 havingthe usual fluted portions ll by which the drafting is. performed inassociation with the usual cushioned top rolls.

Our improved clearer roll R comprises a roller I5 having gudgeons It inits opposite ends and fabric-covered provided with cushioned .or clearerportions ll, each of which portions may engage two of the fluted drawingroll portions H. The gudgeons I6 are supported in vertically yieldablebearings by which the clearer roll R is pressed against the drawing rolll0.

These yieldable bearings may be in the form of U-shaped springs 20, as.shown in Fig. 3, the

lower end of eacnbeing fixedto af stationary part at 2| and theupper endof each being bent to form an open' bearing for a gudgeon Hi. All of theconstruction thus far described is of the usual kind provided for freelyrotatingclearers.

We additionally, provide the clearer "rollR- -with a pluralityof"a'ngula'rly' spaced'pins which co-act with a ring or band 26 mountedon the drawing roll l0 between two fluted portions II and having a notch21 at one point in its periphery. The band 26 rotates with the drawingroll l0 and is of such diameter that the outside of the band normallyengages one of the pins 25 as shown in Fig. 2 and prevents rotation ofthe clearer roll, which thus remains fixed during the greater part ofeach revolution of the drawing roll 10. y

When the notch 21 reaches the pin 25 which is in engagement with theband 26, the clearer roll will be advanced one space and until the nextpin 25 engages the band 26. The clearer roll R is thus alternately fixedand rotated, and

each intermittent advance movement presents a fresh cushioned orfabricsurface to the drawing roll, thus effectively removing the lint orfly therefrom.

In actual operation our improved clearer has proved very effective andsatisfactory,.as it possesses sufficient frictional contact to removeall of the lint and fly from the drawing roll. It is also advancedintermittently, thus firmly pressing the accumulated lint or fly againstthe roll and preventing dislodgement thereof to pass into the roving oryarn.

In Fig. 3 we have shown our improved clearer embodied in a long-draftapparatus comprising front rolls F and F, middle rolls M and M and backrolls B and B. A lower apron A and an upper apron A are mounted on themiddle rolls M and M and pass around the usual fixed guide bars 49. Ourimproved clearer roll R engages the lower surface of the lower or drivenback roll'B and the outer surface of the lower apron A and thusfrictionally removes the lint and fly onboth of these surfaces duringthe periods in which it is held from rotation. The means forintermittently advancing the clearer rollR' may be the same as is shownin Figs. 1 and 2 for the roll R. r

The ring 26 may be formed integralwith the drawing roll ID or may beattached thereto in any convenient manner, asby the two-part assemblyconstruction shown in the prior patent to Brouwer, No. 1,993,729.

Having thus described two embodiments of our I for successivepredetermined intervals while said drawing roll continues to rotate.

2. In a roving or spinning frame, a driven drawing roll, a clearer rollassociated therewith, a notched band on said drawing roll, a pluralityof circumferentially spaced pins on said clearer roll positioned to beengaged and intermittently and alternately held and advanced by saidnotched band.

3. In a roving or spinning frame, a drawing roll continuously rotated inone direction, a clearer roll in direct and positively driving contactwith said drawing roll and rotated therewith, and ,means to positivelyand periodically interrupt the rotation of said clearer roll by saiddrawing roll.

4. In a roving or spinning frame, a driven drawing roll continuouslyrotated in one direction, a long-draft apron mounted thereon andactuated thereby, a clearer roll, means to cause said clearer roll toyieldingly engage said apron, and intermittently operating drivingconnections between saiddrawing roll and said clearer roll through whichsaid clearer roll is given successive and positive intermittent advancemovements in the same surface direction as that part of said apronengaged therewith and definite and positive intervening rest periods.

5. In a draft mechanism for textile fibers, the combination of two pairsof drawing rolls both positively and continuously rotated in one and thesame direction, long-draft aprons on one pair of said drawing rolls, aclearer roll engaging the lower apron and the other lower drawing roll,and means to give said clearer roll successive positive but intermittentrotative motions in the same surface direction as that part of saidapron engaged thereby and intervening positive rest periods, saidclearer roll being thereby rendered efiective to wipe the workingsurfaces of said lower apron and said second lower drawing roll.

JAMES L. TRUSLOW.

HENRY L. THOMAS.

